Well, I would recommend Tice for build quality + sonics (both fantastic), but seeing as they just went out of business... I wouldn't recommend them so eagerly anymore : ( They made some of the best.
ps - they can make a huge difference... as for Monster, check out this closeout on www.hcmaudio.com:
Monster HTS-2500 Power Filter $154.95
ps - they can make a huge difference... as for Monster, check out this closeout on www.hcmaudio.com:
Monster HTS-2500 Power Filter $154.95